Nothing ever leaves your device
133 privacy-first PDF tools, a drag-and-drop workflow builder, and a full document editor — nothing ever leaves your device.
What's new
Pick a feature to see the tools behind it, a walkthrough video, screenshots and the matching tutorial.
NewWork Studio workflowsChain any tools into a repeatable, one-click workflow and run it across a whole folder.Explore this feature
UpdatedTrue redaction & encryptionPermanently remove content, strip metadata and lock files with AES-256 — nothing uploaded.Explore this feature
NewWASM speed engineCompiled Rust modules stream pages as they render, so big merges feel instant.Explore this feature
BetaFull document editorRearrange pages, edit the text layer and annotate without round-tripping to another app.Explore this featurePrivacy by architecture
Processing happens inside the browser sandbox. There is no upload step to audit, no retention policy to trust and nothing to leak.
Work Studio
Compose tools into a workflow, save it as a preset and run it across a whole folder of documents whenever you need it.
Performance
Compiled Rust modules stream pages as they render, so a 400-page merge feels instant instead of queued.
What you get
Every capability below runs locally. There is no upload queue, no processing tier and no file retention to reason about.
Merge, split, OCR and redact locally. Files never leave the device.
Chain tools into repeatable, multi-step document workflows.
Heavy lifts run on compiled Rust for native-grade speed.
Everything from compression to form filling in one workspace.
Password-protect, sign and permanently redact sensitive pages.
Rearrange, annotate and rewrite pages without round-tripping.
Free tools
Every tool runs in your browser. Open a PDF tool to see how it works and the matching tutorial, or open the notepad, CAD studio and calculators to use them right here.
FreeMerge PDFCombine files in secondsDrop any number of PDFs, reorder pages visually and download one clean document.Open tool pageFreeCompress PDFShrink scans, keep qualityReduce huge scans to email-friendly sizes with visually lossless presets.Open tool page
FreeOCR ScannerMake scans searchableTurn scanned paper into searchable, selectable text in 40+ languages.Open tool pageFreeSplit PDFExtract exactly what you needSlice by page, range, bookmark or file size — preview before you export.Open tool pageProRedact PDFDelete content for realPermanently remove text, images and metadata — not just black boxes.Open tool pageProBatch WorkflowsOne click, a whole folderChain tools into a saved preset and run it across hundreds of files.Open tool page
FreeZehnax MathPadNotes that do the mathA Markdown notepad with dynamic math blocks, function graphs and value tables.Open tool page
FreeUnity CAD Studio3D & 2D modeling in the browserA full-screen CAD studio for 3D and 2D modeling, powered by Unity WebGL.Open tool page
FreeScientific CalculatorFull precision, five modesTrig, hyperbolic and combinatorics, plus matrix, vector, equation and base-conversion tabs.Open tool page
FreeGraphing CalculatorPlot in 2D and 3DFunctions, polar, parametric and 3D surfaces, with value tables, statistics and regression.Open tool pageSee it work
Step through the workflow builder, or watch the full walkthrough.
Step 1 of 4
PDF, DOCX, images and scans are parsed locally the moment they land.
Who it's for
The same toolkit, shaped around very different paperwork.
Legal teams
Redact, bates-stamp and bundle exhibits without a third party ever seeing them.
Operations
Build one workflow for invoices or onboarding packs and reuse it every month.
Education
Split readers, compress scans and assemble handouts straight from the browser.
Freelancers
Replace scattered paid converters with a single private workspace.
Learn
Each one is a focused walkthrough with a saved preset at the end.
Chain OCR, redaction and merge into a one-click preset.
Read tutorialWhy black boxes are not redaction, and how to remove content for real.
Read tutorialRun a saved preset across hundreds of documents in one pass.
Read tutorialInstall the workspace and keep processing with no connection.
Read tutorialMap data into form fields, then flatten for distribution.
Read tutorialApply digital signatures and check the trust chain locally.
Read tutorialExamples
Each card is a preset you can rebuild in Work Studio in a couple of minutes.
Legal
42 exhibits merged, bates-stamped and redacted in a single pass.
Finance
Split a statement pack, rename by client and compress for archive.
HR
Assembled from twelve sources with a generated table of contents.
Records
1,200 scanned pages OCR'd into searchable, compressed PDFs.
Education
Chapters extracted, annotated and re-bound as a student handout.
Healthcare
Fields mapped from a spreadsheet, filled and flattened locally.
Resources
FAQ
Still unsure? The answer is almost always 'it runs locally'.
